odd subtle sucky noise

My exhaust has just started to blow (last replaced 16 months ago)



Now....thats okay, one way or another I'll sort that.



Im experiencing an odd subtle sucky kind of noise which sounds like it's coming from the front of the car as opposed to the back. Seems to happen 30mph plus and does down when idling.



I can't even tell if it's always been present or if my hearing has become ultra sensitive as they keep popping after having a cold.



Sounds a bit like sn aeroplane is way up above my car all the time.



Am I going nuts?

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